Page Rotation Metadata is not applied correctly

[oallw]

When rotating pages by changing the Page Rotation metadata, the fields have the wrong position and wrong orientation.

Investigation: formalpdf renders rotated pages correctly as landscape. The ML model returns normalized coordinates (x_n, y_n) relative to that landscape image. But rect_for() converts using the raw mediabox as if the image were portrait. So scaling is wrong and the axes are transposed.

Example

Reproduce

• Original file with pages rotated in Mac Preview (p. 7-14): 2074.pdf
• File with incorrectly detected fields: 2074-form-output.pdf
• Run commonforms 2074.pdf

[jbarrow]

Thanks for raising this! I'll have to dig into how AcroForm fields are affected by page rotations, I recall this being somewhat thorny in the past.

[oallw]

Thank you!

I'll have to dig into how AcroForm fields are affected by page rotations, I recall this being somewhat thorny in the past.

Yes, I did a vibe-coded fix for this doc and I had to bake the rotation with transfer_rotation_to_content, otherwise the fields' rotation was still off (might depend on the viewer application).